Biometric authentication using circular segment around optical disc

In this paper we have proposed a method for biometric authentication using semi-circular segment around retinal fundus optical disc. It is noted that thickness and density of blood vessels are most prominent in close proximity regions around the optical disc since blood vessels enter retina through optical disc. The idea of using these spatial arrangements of blood vessels as feature provides us with uniqueness. Images in RGB and YCbCr color spaces are tested in two separate experiments. The first experiment (Exp-I) resulted in 84.2% accuracy using RGB and in the second experiment (Exp-II), 89.2% accuracy was achieved, in YCbCr color space. The average time taken is 10.25 seconds.